Summary:
Feeding wolf with rabbit stew doesn't return empty bowl.

Steps to reproduce:

1. Summon the wolf.
2. Tame using a bone.
3. Damage the wolf with your hand a couple of times.
4. Take rabbit stew.
5. Go to survival.
6. Feed the wolf with rabbit stew.

Observed results:
You didn't get an empty bowl instead of rabbit stew after feeding the wolf.

Expected results:
You received an empty bowl instead of rabbit stew after feeding the wolf.

Notes:
In Java Edition you can't feed wolves with rabbit stew, so it's impossible to compare the behavior to Java.